S-57 DATASETS ON UNSPECIFIED DATUM

Positions obtained from Global Navigation Satellite Systems, such as GPS, are normally referred to WGS84 Datum. The differences between satellite-derived positions and positions on this cell cannot be accurately determined; the estimated value of the difference for this region of the chart is shown in the INFORM attribute. Mariners are warned that these differences MAY BE SIGNIFICANT TO NAVIGATION and are therefore advised to confirm GPS positions shown in the chart display using alternative navigational techniques particularly when closing the shore or navigating in the vicinity of dangers.